O'Sullivan Beach · Suburb / Locality

Demographics & Identity in O'Sullivan Beach

Who lives here — how many people, how old they are, and how communities identify.

A higher proportion of seniors than the national average shapes the daily feel of O'Sullivan Beach. The typical resident is 44, making the area noticeably older than most of Australia. With 1,844 people, it is larger than about 80% of similar areas.

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📍 O'Sullivan Beach, Suburb / Locality

Where O'Sullivan Beach sits — Total population

1,844 ▼ -4.7%
  • 1–1: 689 areas
  • 1–2: 0 areas
  • 2–3: 119 areas
  • 3–5: 108 areas
  • 5–7: 243 areas
  • 7–11: 241 areas
  • 11–16: 514 areas
  • 16–24: 579 areas
  • 24–36: 898 areas
  • 36–53: 1059 areas
  • 53–79: 1168 areas
  • 79–117: 1203 areas
  • 117–174: 1171 areas
  • 174–258: 1010 areas
  • 258–384: 856 areas
  • 384–571: 670 areas
  • 571–850: 616 areas
  • 850–1,263: 567 areas
  • 1,263–1,879: 520 areas
  • 1,879–2,794: 590 areas
  • 2,794–4,154: 679 areas
  • 4,154–6,177: 585 areas
  • 6,177–9,186: 528 areas
  • 9,186–13,659: 405 areas
  • 13,659–20,311: 195 areas
  • 20,311–30,202: 96 areas
  • 30,202–44,910: 33 areas
  • 44,910–66,781: 10 areas

All suburb / locality areas, 2021. The marker is O'Sullivan Beach — higher than 77% of areas.

Total population compared with the state and national average
O'Sullivan Beach1,844
5166, SA 1,844
South Australia 1,781,516
Australia 25,422,788

Population

How many people, and the typical age.

The typical person living here is 44 years old, which is noticeably older than the South Australian figure of 41 and the national figure of 38.

1,844 ▼ -4.7%

Higher than 77% of suburb / locality areas.

  • 2011: 1,934
  • 2016: 1,879
  • 2021: 1,844

The number of people who usually live in the area, counted on Census night.

44 yrs ▲ +10.0%

Younger than 54% of suburb / locality areas.

  • 2011: 40 yrs
  • 2016: 43 yrs
  • 2021: 44 yrs

Half the population is older than this age, and half younger.

Age profile

How the population splits across age groups.

Older residents are common here, with people aged 65 and over making up 24.3% of the population, well above the national figure of 17.2%. This is consistent with the area having far fewer children under 15 than most other places.

24.3% ▲ +53.6%

Higher than 73% of suburb / locality areas.

  • 2011: 15.8%
  • 2016: 21.9%
  • 2021: 24.3%

Share of the population aged 65 years and over.

14.8% ▼ -20.0%

Lower than 65% of suburb / locality areas.

  • 2011: 18.5%
  • 2016: 16.2%
  • 2021: 14.8%

Share of the population aged under 15 years.

Age structure

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O'Sullivan Beach splits fairly evenly between Young adults (25–44) (27%) and Older adults (45–64) (25%), with Seniors (65+) at 24%.

Identity & relationships

First Nations identity and marital status.

About 4.2% of residents identify as Aboriginal and Torres Strait Islander, which is a little above the state average. In terms of relationships, those in de facto partnerships make up 12.8% of the population.

12.8% ▼ -5.1%

Higher than 55% of suburb / locality areas.

  • 2011: 13.5%
  • 2016: 13.9%
  • 2021: 12.8%

Share of people aged 15+ who are in a de facto marriage (registered marriages excluded).

Marital status

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O'Sullivan Beach splits fairly evenly between Never married (40%) and Married (37%), with Divorced at 14%.

Age & sex structure

  • 85+: 85+: 12 males; 85+: 16 females
  • 80–84: 80–84: 26 males; 80–84: 33 females
  • 75–79: 75–79: 54 males; 75–79: 38 females
  • 70–74: 70–74: 62 males; 70–74: 89 females
  • 65–69: 65–69: 59 males; 65–69: 60 females
  • 60–64: 60–64: 63 males; 60–64: 64 females
  • 55–59: 55–59: 58 males; 55–59: 46 females
  • 50–54: 50–54: 76 males; 50–54: 56 females
  • 45–49: 45–49: 50 males; 45–49: 42 females
  • 40–44: 40–44: 62 males; 40–44: 44 females
  • 35–39: 35–39: 63 males; 35–39: 63 females
  • 30–34: 30–34: 60 males; 30–34: 55 females
  • 25–29: 25–29: 67 males; 25–29: 60 females
  • 20–24: 20–24: 42 males; 20–24: 42 females
  • 15–19: 15–19: 49 males; 15–19: 37 females
  • 10–14: 10–14: 59 males; 10–14: 47 females
  • 5–9: 5–9: 43 males; 5–9: 49 females
  • 0–4: 0–4: 41 males; 0–4: 40 females

Sources

  • Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0).

More for O'Sullivan Beach

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in O'Sullivan Beach [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sal/SAL41062/o-sullivan-beach/topic/demographics-identity